conjunction
then; if so; if that is the case
Used to draw a logical conclusion or consequence from a preceding statement, similar to 'if that is the case, then...'. Often interchangeable with とすれば.
See also: とすれば
彼が来ないとすると、誰が代わりにやるの?
If he doesn't come, then who will do it instead?
それが本当だとすると、大変なことだ。
If that is true, then it's a serious matter.